Cultilene Rockwool Round Macro Plugs (Case of 2,430 Pieces)Cultilene Rockwool Round Macro Plugs (Case of 2,430 Pieces) (CUL005)Cultilene has many years of experience developing Rockwool products in the Netherlands and is preferred by some of the largest industrial propagators in the world. The quality of their newest Rockwool cubes, plugs, and starter sheets is by far the best on the market with superb air to water ratio and a fibre struct... — Ships separately from DL: Livermore, California USA....more info.

Hugo Blk 6x6x5.8 w/hole 40/40 (case of 48)Grodan Hugo Blk 6x6x5.8 w/hole 40/40 (RWHUGO)Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the differ... — Ships separately from HF: OR, CA, CO, PA, TX, FL USA....more info.

Delta 10 Block, 4x4x4", case of 144Grodan Block, 4X4X4 42/40 144cs (RWDM10G)Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different ... — Ships separately from HF: OR, CA, CO, PA, TX, FL USA....more info.

Bulk Rockwool. 22 lbAgrodynamics Horticultural Rockwool - 22lb Bail of bulk rockwool. Good nutrient to air balance. Great for hydroponics.Rockwool is basically a spun molten basalt rock. This product was not formed and cut like the cubes. Instead it was bailed. It is used to fill pots and used for the main growing medium. Works great!... — Ships separately from Portland, Oregon USA....more info.

PLANT!T Coco Coir Mix Brick, set of 3PLANT!T PLANT!T Coco Coir Mix Brick, set of 3 (JSCPB)Give your plants a sturdy growing structure with Plant!t’s CoCo Coir Bricks. Now available at Hydrofarm, CoCo Coir Bricks support your plants all year long. The bricks, available in a mix or chip format, do double duty: They retain water, making sure plants never go thirsty, but due to their texture, they also offer excelle... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.